Spatial motion of a rigid body can be seen as a screw motion of the body along a specific axis.

任一刚体的空间运动都可以视为沿某一轴线作螺旋运动。

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The screw axis equation of the general motion of a rigid body has been derived by means of a comparison method.

本文用比拟法推得了刚体一般运动的螺旋轴方程。

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Secondly, a real number quaternion transformation is used to study the general motion of a rigid body and the relative motion of several rigid bodies;

其次，得到了刚体和一般运动中的实数四元数形式的姿态方程式和位移方程式。

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This would be backed up by some programming, to give the droids a basic understanding of rigid body mechanics, and how to construct motion plans.

ENGADGET: Georgia Tech receives $900,000 grant from Office of Naval Research to develop 'MacGyver' robot